Home / 18,289.85-27,435.80-5,141.20

Finding the Fourth Proportional to 18,289.85, 27,435.80 and 5,141.20

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Solution

The fourth proportional to 18,289.85, 27,435.80 and 5,141.20 is: 7,712.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.85 : 27,435.80 = 5,141.20 : x
  2. Step 2: Convert to fraction form
    18,289.85/27,435.80 = 5,141.20/x
  3. Step 3: Cross multiply
    18,289.85x = 27,435.80 × 5,141.20
  4. Step 4: Simplify right side
    18,289.85x = 141,052,934.96
  5. Step 5: Solve for x
    x = 141,052,934.96/18,289.85
  6. Step 6: Final answer
    x = 7,712.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.